Sorry for the bad news... 😟
Sadly, it seems that Trilobug must have been muggled from its last known location - in the Lomas de Arena cache near Santa Cruz, Bolivia.
To the owners of the Trilobug - I sure was looking forward to bringing it back to New York with me, but it looks like that thing is long gone. (Probably in some local kid´s bedroom, sitting on a shelf). Sorry!
The hiding place wasn´t really obvious...until you´re right upon it...and I imagine that someone stumbled upon it.